IWR1843

• FMCW transceiver
  • Integrated PLL, transmitter, receiver, Baseband, and A2D
  • 76- to 81-GHz coverage with 4 GHz available bandwidth
  • Four receive channels
  • Three transmit channels
  • Ultra-accurate chirp engine based on fractional-N PLL
  • TX power: 12 dBm
• Built-in calibration and self-test (monitoring)
  • ARM^® Cortex^®-R4F-based radio control system
  • Built-in firmware (ROM)
  • Self-calibrating system across frequency and temperature
• C674x DSP for FMCW signal processing
• On-chip Memory: 2MB
• Cortex-R4F microcontroller for object tracking and classification, and interface control
  • Supports autonomous mode (loading user application from QSPI flash memory)
• Integrated peripherals
  • Internal memories With ECC
• Host interface
  • CAN and CAN-FD
• Other interfaces available to user application
  • Up to 6 ADC channels
  • Up to 2 SPI channels
  • Up to 2 UARTs
  • I²C
  • GPIOs
  • 2-lane LVDS interface for raw ADC data and debug instrumentation
• IWR1843 advanced features
  • Embedded self-monitoring with no host processor involvement
  • Complex baseband architecture
  • Embedded interference detection capability
  • Programmable phase rotators in transmit path to enable beam forming
• Power management
  • Built-in LDO network for enhanced PSRR
  • I/Os support dual voltage 3.3 V/1.8 V
• Clock source
  • Supports external oscillator at 40 MHz
  • Supports externally driven clock (square/sine) at 40 MHz
  • Supports 40 MHz crystal connection with load capacitors
• Easy hardware design
  • 0.65-mm pitch, 161-pin 10.4 mm × 10.4 mm flip chip BGA package for easy assembly and low-cost PCB design
  • Small solution size

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The IWR1843 device is an integrated single-chip mmWave sensor based on FMCW radar technology capable of operating in the 76- to 81-GHz band with up to 4-GHz continuous chirp. The device is built with the low-power 45-nm RFCMOS process from Texas Instruments. This solution enables unprecedented levels of integration in an extremely small form factor. The IWR1843 is an ideal solution for low-power, self-monitored, ultra-accurate radar systems in industrial applications, such as, building automation, factory automation, drones, material handling, traffic monitoring, and surveillance.

The IWR1843 device is a self-contained, single-chip solution that simplifies the implementation of mmWave sensors in the band of 76 to 81 GHz. The IWR1843 includes a monolithic implementation of a 3TX, 4RX system with built-in PLL, and A2D converters. The IWR1843 also integrates a DSP subsystem, which contains a TI high-performance C674x DSP for the radar signal processing. The device includes an ARM R4F-based processor subsystem, which is responsible for front-end configuration, control, and calibration. Simple programming model changes can enable a wide variety of sensor implementation with the possibility of dynamic reconfiguration for implementing a multimode sensor. The Hardware Accelerator block (HWA) can perform radar processing and can help save MIPS on the DSP for higher-level algorithms. Additionally, the device is provided as a complete platform solution including TI reference designs, software drivers, sample configurations, API guides, training, and user documentation.